Pipe-coupling.



G. J. SMITH.

PIPE COUPLING.

APPLICATION mum JAN. 2, 1907.

943,900. Patented Dec. 21, 1909.

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AT/ORNEVS .l.o all whom it may concern:

, sired. The coupling also includes a resilient tive sections of the coupling tightly in eir ran STATES AT UFFTQQ CLARK J. SMITH, or OTTUMWA, IOWA, ASSIGNOR 'ro HARDSOCG WONDER DRILL 00.,

' or OTTUMWA, IowA, INCORPORATED.

PIPE-COUPLING;

Application filed January 2 Be it known that I, CLARK J. SMITH, residing at Ottumwa, in'the county of Wapello and State of Iowa, have invented certain new and useful Improvements in Pipe- Couplings, of which the following is a speci-' lication.

My invention relates to certain new and useful improvements in pipe couplings, and it particularly has forits object to provide a couplingthat is particularly adapted for use as a train pipe or hose pipe coupling which is of such construction and desi n as to be easily and cheaply manufactured and which will readily and effectively serve its intended purposes. t

Another object of my invention is to provide a couplingiwhich can be very quickly coupled and uncoupled, and which also consists of a minimum number'of parts.

Generically my invention comprises a pair of couplin heads having means for cooperatively loc (ing the'parts together, said locking, means hem of a particular design to enable a quick interlocking of the parts to lock thesections together, and also to enable a quick unlocking 0f the-parts whenever. 'detubular ferrule which not alone ,serves a washer or packing function, but also serves the function of a spring to hold the res eclocked position. v

Again the invention resides in certain I novel construct-ion, combination and 'arrangement of parts, all of whichwill be first described in detail, and'then be specificalliy pointed out inthe appended claims, re erence being had to the accompanying drawing, in which Figure 1, is a perspective view of my invention in use, the parts being 7 coupled. Fig. 2, is a similar view, the parts being uncoupled. Fig. 3, is a central, vertical longitudinal section of the coupling in its locked position. Fig. 4, is a cross section on the line 44 of Fig. 3. Fig. 5, is a cross section on the line 55 of Fig.3, the parts being in their unlocked position. Fig. 6, is a diagrammatic view showing the position of the interlocking lugs when the sections are first engaged. Fig. 7 ,is a similar view showin the positionof the lugs when moved half the ferrule 5, hereinbefore referred to.

section 2 is further provided with a slightly Specification of Letters Patent. Patented D2 21, 11909,

1907. Serial No. 350,515.

1 way-towardthe'unlocked position. Fig. 8, ugs

is another diagrammatic view of the when the sections are locked.

Referring now to the accompanying drawings in'which like letters and numbers of erence indicate like parts in all of the figures, 1 and 2 designate respectively the male and female sections of the'coupling. The section 1 has theusual tubular neck 1 to which the hose pipe 3 may be secured by a wire clamp 3 as shown The section 1, is provided with a bore 1 which merges with a slightly conically formed seat 1 and in whichthe ferrule 5 is held, the ferrule 5 being simpl a short section of rubber tube.

' The ferru e 5 has its end 5 abutting the seat 1, as shown. On its outer surface and spaced inwardly some distance from the end of the member 1 is a series of lugs 1} which are of a peculiar construction and form one of the essential arts of my invention. The lugs 1 it will e noticed, consist of a curved portion 1 which merges with the curved seat 1 that in turn merges with a further curved portion 1 which projects beyond the portion 1 to form a stop for the lugs of the .other section 2, hereinafter again referred to.

Each of the lugs 1 is spaced from the other by a channel 1 of a width slightly greater than that of the lugs Q -carried by the'coupling section 2. The section 2 has the usual couple to which the pipe 4 is secured simij larly to the pipe 3, by a wire clamp 4, as

shown. The coupling section 2 has a bore 2 of ,correspondlng diameter to the bore l ofthe section 1 and the bore 2 like the section 1 terminates in a conical seat 2 to receive The larger bore 2 which mer es with the bore 2 and which is of such diameter as to receive the projecting end 1 of the section 1 and at its outer end the section 2 is provided with a further bore 1 of a diameter slightly greater than that of the outer surface of the lugs 1 .so that the lugs 1 will enter the bore 1 when the parts are locked. The section 2 carries a plurality of lugs 2, one for each hm 1, which lu'gs project from the end face of wardly toward the central axis, a distance great enough to bring the adjacent the section 2 as at 2 and in-,

' of a radius equal to that of the projection 1,

and the projection 1, as indicated in the diagrammatic figures of the drawmgs.

In oining the two sectlons of the coupling the parts are assembled as shown in Fig. 1,

the lugs 2 being in the grooves 1 and the ends of the ferrule 5 abutting its respective seats of the coupling members. It is then only necessary to turn the parts slightly from the position diagrammatically shown in Fig. 6, which is the initial position, to that shown in Fig. 7, when the lugs 2 will ride up out the projections 1 this amount of turn being only through the arc of a circle equal to the distance between the center of the grooves l and the center of curvature of the projections P. This will cause the coupling members to draw together against the counteracting tension of the ferrule 5 and upon moving the sections farther to the po sition shown in Fig. 8, the lugs 2 will enter the seats 1 and will be forced tightly into the same by the resiliency of the ferrule 5, thus the ferrule serves not only a washer function to render the joint water tight but a spring function to hold the parts locked. To unlock the section, it is only necessary to turn the sections in a reverse direction to the locking direction, when the lugs 2 will again come into alinement with the grooves 1 and the sections may be pulled apart. By reason of the projections 1 being greater than the projections 1 they form locking stops against which the lugs 2 may abut whenever the sections are moved into either their locked or unlocked position.

From ;the foregoing description taken in connection with the accompanying drawings, it is thought the complete construction, operation and numerous advantages of my invention will be readily understood by those skilled in the art to which the invention appertains, and it furthermore will 'be seen that I have provided a quick-acting coupling of a very simple and efiective construction that can be manufactured at aminimum expense.

What'I claim is 1. In a pipe coupling of the character described, a male and a female section, each of said sections having a ferrule receiving bore terminating in a.ferrule stop wall, an elastic ferrule held Within said sections, said female section having a plurality of diametrically projecting lugs, said male sections having likewise a plurality of lugs spaced-apart to permit passage of the lugs of the female sectiomsaid male section lugs each comprising a curved projection merging with a curved seat, and a second curved projection also merging with the curved seat substantially as shown and described.

2. In a pipe coupling of the character described, a male and a female section, each of said sections having a ferrule receiving bore terminating in a ferrule stop wall, an elastic ferrule held within said section, said female section having a plurality of diametrically projecting lugs, said male sections having likewise a plurality of lugs spaced apart to permit passage of the lugs of the female section, said male section lugs each comprisin a curved projection merging with a curved seat, a second curved projection also merging with the curved seat, said second projection being greater than the first curved projection to form stops substantially as shown and described.

3. In a pipe coupling of the character described, a male and a female section, each of said sections having a ferrule receiving bore terminating in a conical ferrule stop wall with the portion of smallest diameter away from the mouth of the sections, an elastic "ferrule-held-withinsaid sections, said female section having a plurality of diametrically projecting lugs of cylindrical form, said male section having likewise a plurality of lugs spaced apart to permit passage of the lugs of the female section, said male section lugs each comprising 'a semi-circular curved projection merging with a semi-circular seat, which seat in turn merges with a second semi-circular projection, said second projection being greater than the first projection to form a stop, substantially as shown and described.

4. In a pipe coupling, a male and a female section, each of said sections having a ferrule receiving bore terminating-in a conical ferrule stop Wall with the portion of smallest diameter away from the mouth of said sections,an elastic ferrule held within said sections, said female section having a plurality of diametrically projecting lugs of cylindrical form and projecting inwardly from the inner surfaces of the sections, said male section having likewise a plurality of lugs on its outer surfaces, spaced apart to permit passage of the lugs of the female section, said male section lugs each comprising a semi-circular curved projection merging with a semi-circular seat, which seat in the seat portion of the lugs of the other section, substantially as shown and described.

CLARK J. SMITH.

merging with said seats whereby the axial rotation of the sections will force the sections toward one another until the lugs of the one section engage the seat portion of the other section, and said flexible ferrule serving to force the sections away from each other to seat the lugs of the one section into \Vitnesses GERTRUDE ORR, F. H. HosWELL. 

